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BIBTEX RIS

Emissões naturais e antrópicas de metais e nutrientes para a bacia inferior do rio de contas, Bahia

2010; Brazilian Chemical Society; Volume: 33; Issue: 1 Linguagem: Inglês

10.1590/s0100-40422010000100014

1678-7064

Francisco Carlos Fernandes De Paula, Luiz Drude de Lacerda, Rozane Valente Marins, José Edvar Aguiar, A. R. C. Ovalle, Cézar Augusto Teixeira Falcão Filho,

Heavy metals in environment

Emission factors of anthropogenic activities and natural processes were used to estimate nutrients and metals loads to the Contas River lower basin, Southern Bahia, Brazil.Among natural sources, emission from soil leaching is larger for N, Cu and Pb.Atmospheric deposition is the major natural source of P, Zn, Cd and Hg.Among anthropogenic sources, agriculture is the major source of N, Cu and P. Urban sources are the major contributors to the other elements.Present anthropogenic land uses are already responsible for 78 and 99% of total N and P loads and about 50% of total Cu and Hg.